(gawk.info) Arrays

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(gawk.info) Built-in

 
 Arrays in `awk'
 ***************
 
    An "array" is a table of values, called "elements".  The elements of
 an array are distinguished by their indices.  "Indices" may be either
 numbers or strings.  `awk' maintains a single set of names that may be
 used for naming variables, arrays and functions ( User-defined
 Functions User-defined.).  Thus, you cannot have a variable and an
 array with the same name in the same `awk' program.
 

Menu

 
* Array Intro                 Introduction to Arrays
* Reference to Elements       How to examine one element of an array.
* Assigning Elements          How to change an element of an array.
* Array Example               Basic Example of an Array
* Scanning an Array           A variation of the `for' statement. It
                                 loops through the indices of an array's
                                 existing elements.
* Delete                      The `delete' statement removes an element
                                 from an array.
* Numeric Array Subscripts    How to use numbers as subscripts in
                                 `awk'.
* Uninitialized Subscripts    Using Uninitialized variables as subscripts.
* Multi-dimensional           Emulating multi-dimensional arrays in
                                 `awk'.
* Multi-scanning              Scanning multi-dimensional arrays.
* Array Efficiency            Implementation-specific tips.
 

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